Learning Forum

[Uniform]

I am currently designing a brake rotor and running the analysis using frictional contacts. However, after a few minutes the solver would stop and I'd run into a few warnings and an error they read:

Warnings:

One or more contact pairs are detected with a friction value greater than 0.2. If convergence problems arise, switching to an unsymmetric Newton Raphson option may aid in convergence.

One or more contact pairs exceeds contact small sliding assumption, check your results carefully.  Consider using Large Deflection or turning off Small Sliding on the offending contact pair(s).  You may select the first offending pair via RMB on this warning in the Messages window.  Additionally, you can use the “Number With Too Much Sliding” Contact Results Tracker to locate any additional pairs.

The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose.

Error:

The solver engine was unable to converge on a solution for the nonlinear problem as constrained.  Please see the Troubleshooting section of the Help System for more information.

How do I fix this?

Here is the file for 2019 R2

[peteroznewman]

Here are the instructions for attaching models to posts.

You didn't say if it was Static Structural or Transient Dynamics.

Did you try to follow any of the advice in the error messages?

[Uniform]

It is static structural, I haven't since I don't really understand what they mean and google doesn't bring up many results I am a college sophmore

[Uniform]

Here are the instructions for attaching models to posts.

You didn't say if it was Static Structural or Transient Dynamics.

Did you try to follow any of the advice in the error messages?

 

Hi when you have a change I'd like your help on this Thanks!

[peteroznewman]

Upload a new file that has the Geometry improvements I suggested in your meshing question.